Section 3.1 class notes_0

Section 3.1 class notes_0 - Section 3.1 Relations and...

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Section 3.1 Relations and Functions Objective 1: Understanding the Definitions of Relations and Functions Definition Relation A relation is a correspondence between two sets A and B such that each element of set A corresponds to one or more elements of set B. Set A is called the domain of the relation and set B is called the range of the relation. Definition Function A function is a relation such that for each element in the domain, there corresponds exactly one and only one element in the range. In other words, a function is a well-defined relation. The elements of the domain and range are typically listed in ascending order when using set notation. Objective 2: Determine if Equations Represent Functions To determine if an equation represents a function, we must show that for any value of in the domain, there is exactly one corresponding value in the range. Objective 3: Using Function Notation; Evaluating Functions When an equation is explicitly solved for y , we say that “ y is a function of
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Section 3.1 class notes_0 - Section 3.1 Relations and...

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